{"id":87649,"date":"2021-06-15T10:56:55","date_gmt":"2021-06-15T05:26:55","guid":{"rendered":"https:\/\/kseebsolutions.guru\/?p=87649"},"modified":"2021-06-29T08:58:38","modified_gmt":"2021-06-29T03:28:38","slug":"1st-puc-biology-question-bank-chapter-3","status":"publish","type":"post","link":"https:\/\/kseebsolutions.guru\/1st-puc-biology-question-bank-chapter-3\/","title":{"rendered":"1st PUC Biology Question Bank Chapter 3 Plant Kingdom"},"content":{"rendered":"
Question 1.
\nWhich group of plants are commonly called Amphibians of the Plant Kingdom?
\nAnswer:
\nBryophytes.<\/p>\n
Question 2.
\nWhy the Plant body of Bryophytes is Gametophyte?
\nAnswer:
\nPlant body of bryophyte produces gametes in their sex organs.So it is gametophyte.<\/p>\n
<\/p>\n
Question 3.
\nName the male sex organ of a Bryophyte.
\nAnswer:
\nAntheridium.<\/p>\n
Question 4.
\nName the class to which Riccia belongs.
\nAnswer:
\nHepaticopsida.<\/p>\n
Question 5.
\nName the organ that fixes the plant body of Riccia to the on soil.
\nAnswer:
\nRhizoid.<\/p>\n
Question 6.
\nWhat is a sporophyte ?
\nAnswer:
\nIt is the plant body or generation that produces spores by asexual method.<\/p>\n
Question 7.
\nWhat is thallus?
\nAnswer:
\nThallus is the undifferentiated plant body characteristic of bryophytes, lower pteridophytes and algae.<\/p>\n
<\/p>\n
Question 8.
\nWrite a note on Archegonia.
\nAnswer:
\nThese are flask shaped female sex organs found in the gametophyte of bryophytes, pteridophytes and gymnosperms.<\/p>\n
Question 9.
\nAssign the following plants to their respective groups,
\n(i) Anthoceros
\n(ii) Funaria.
\nAnswer:
\n(i) Anthoceros – Class : Anthoceratopsida, Division : Bryophyta.
\n(ii) Funaria – Class : Bryopsida, Division : Bryophyta.<\/p>\n
Question 10.
\nGive reason for the following:
\nBryophytes require water for reproduction.
\nAnswer:
\nThe sperms of bryophytes are motile, hence require water for swimming.<\/p>\n
Question 11.
\nGive reason:
\nBryophytes are amphibians of the plant kingdom.
\nAnswer:
\nEven though bryophytes live on land they need water for fertilization.<\/p>\n
Question 12.
\nWhat are Tracheophytes?
\nAnswer:
\nThey are the group of plants which contain xylem and phloem.<\/p>\n
Question 13.
\nWhich is the dominant phase in the life cycle of Pterido’phyta?
\nAnswer:
\nDiploid sporophyte is the dominant phase in the life cycle of Pteridophyta.<\/p>\n
Question 14.
\nWhat is the other name of ProthaUus?
\nAnswer:
\nGametophyte.<\/p>\n
Question 15.
\nWhat is an Archegonium?
\nAnswer:
\nFemale sex organ of Bryophytes, pteridophytes and Gymnosperms is called archegonium. Egg is produced in its venter region.<\/p>\n
<\/p>\n
Question 16.
\nDefine circinate vernation.
\nAnswer:
\nCircinate vernation is the spring like coiled nature of young leaves and branch tips of ferns.<\/p>\n
Question 17.
\nGive reason:
\nPteridophytes are lower vascular cryptogams.
\nAnswer:
\nThey possess xylem and phloem but are seedless plants.<\/p>\n
Question 18.
\nWhat are Strobili?
\nAnswer:
\nThe reproductive organs of gymnosperms are called strobili cones.<\/p>\n
Question 19.
\nWhy the sporophyte of Gymnosperm is heterosporous?
\nAnswer:
\nSporophyte produces two types of spores like smaller microspores and larger megaspores, so it is heterosporous.<\/p>\n
<\/p>\n
Question 20.
\nMention the class of Cycas.
\nAnswer:
\nCycadopsida.<\/p>\n
Question 21.
\nWhat are mega and microsporophylls ?
\nAnswer:
\nMegasporophylls are the leaf like lateral structures of the female cone. They produce megasporangia or ovules. Microsporophylls are the flattened leaf like extensions of male cone. They produce microsporangia.<\/p>\n
Question 22.
\nWhat is a Mycelium?
\nAnswer:
\nMycelium is the plant body of fungi. It comprises of hyphae.<\/p>\n
Question 23.
\nWhich is the cell wall material of Fungi?
\nAnswer:
\nChitin (fungal cellulose).<\/p>\n
<\/p>\n
Question 24.
\nDefine the branch of study known as Mycology.
\nAnswer:
\nMycology is the study of fungi.<\/p>\n
Question 25.
\nWhy are deuteromycetes named Imperfect fungi?
\nAnswer:
\nDeuteromycetes are termed Imperfect fungi, because, only their asexual reproductive stages are known.<\/p>\n
Question 26.
\nWhy Bryophytes are called non-vascular cryptogams and as?
\nAnswer:
\nBryophytes do not contain xylem and phloem tissues so they are non-vasular and as they do not produce visible flowers, so they are cryptogams.<\/p>\n
Question 27.
\nWhat are vascular cryptogams?
\nAnswer:
\nPlants that contain xylem and phloem tissues in their organs, are vascular plants and plants that do not produce flowers and fruits are called as cryptogams.<\/p>\n
<\/p>\n
Question 28.
\nGive one example of Lycopsida.
\nAnswer:
\nLycopodium.<\/p>\n
Question 29.
\nBoth gymnosperms and angiosperms bear seeds, then why are they classified separately?
\nAnswer:
\nThe seeds of gymnosperms are naked whereas the seeds of angiosperms are covered by fruits.<\/p>\n
Question 30.
\nHow would you distinguish monocots from dicots?
\nAnswer:
\nDictos are characterized by having two cotyledon in their seeds while the monocotyledons have only one.<\/p>\n
Question 31.
\nFood is stored as Floridean starch in rhodophyceae. Mannitol is the reserve food of which group of algae?
\nAnswer:
\nPhaeophyceae.<\/p>\n
<\/p>\n
Question 32.
\nThe plant body in higher plants is well differentiated and well developed. Roots are the organs used for the purpose of absorption. What is the equivalent of roots in the less developed lower plants? .
\nAnswer:
\nRhizoids.<\/p>\n
Question 33.
\nWhy are bryophytes called amphibians of plant kingdom?
\nAnswer:
\nBryophytes are called amphibians of plant kingdom they require water for maintaining the cells from dehydration and swimming of sperms to the archegonia at the time of fertilization.<\/p>\n
Question 34.
\nName the amphibians of the Plant Kingdom.
\nAnswer:
\nBryophytes.<\/p>\n
Question 35.
\nWhat is Thallus?
\nAnswer:
\nDorsiventrally flattened plant body without a root, stent and leaf differentiation is called Thallus.<\/p>\n
Question 36.
\nWhich phase is predominent in the life cycle of bryophyte?
\nAnswer:
\nGametophyte.<\/p>\n
<\/p>\n
Question 37.
\nName a gymnosperm with vessels, in the Xylem.
\nAnswer:
\nGnetum.<\/p>\n
Question 38.
\nName a parasitic angiosperm.
\nAnswer:
\nCuscuta.<\/p>\n
Question 1.
\nList any four characteristics of Protista.
\nAnswer:
\n(i) Protists are unicellular eukaryotes and they contain true nucleus and cytoplasmic organells like mitochondria, golgi body etc.
\n(ii) They show different types of nutrition. Some are photoautotrophs while others are heterotrophic,
\nHeterotrophs are saprophytes or parasites. Some protists show animal like holozoic nutrition.
\n(iii) Some protists possess locomotory organellas like pseudopodia, flagella, cilia etc.
\n(iv) Protists show both asexual and sexual reproduction, characters.<\/p>\n
<\/p>\n
Question 2.
\nList the general characters of algae.
\nAnswer:
\n(i) Algae are chlorophyllous, photosynthetic aquatic organisms and they are eukaryotes.
\n(ii) They are either unicellular, colonial or multicellular. The multicelluar algae produce branched or unbranched filaments.
\n(iii) Cell wall is made up of cellulose.
\n(iv) Photosynthetic pigments are in plastids.
\n(v) They show both asexual and sexual reproductions.
\n(vi) Asexual reproduction is by the formation of spores and sexual reproduction is by isogamy or anisogamy.<\/p>\n
Question 3.
\nName the class to which of the following belong. ,
\n(a) Funaria
\n(b) Anthoceros
\n(c) Riccia
\n(d) Polytrichum.
\nAnswer:
\n(a) Funaria – Bryopsida.
\n(b) Anthoceros – Anthocerotopsida.
\n(c) Riccia – Hepaticopsida.
\n(d) Polytrichum – Musci (bryopsida).<\/p>\n
Question 4.
\nWhat is the basis of classification of algae?
\nAnswer:
\nAlgae are classified based on pigments & colour of the thallus.
\n(a) Chlorophyceae: Green algae due to the presence of the pigments chlorophyll a and b.
\n(b) Phaeophyceae: Brown algae due to the presence of the pigments chlorophyll a and c and fucoxanthin. (xanthophyll).
\n(c) Rhodophyceae: Red algae due to the presence of phycoerythrin (red colour) and chlorophyll a and d.<\/p>\n
Question 5.
\nGive an example of plants with
\n(a) Haplontic life cycle
\n(b) Diplontic life cycle.
\nAnswer:
\n(a) Haplontic life cycle: Spirogyra, Volvox.
\n(b) Diplontic life cycle : Fucus, seed plants.
\n(c) Haplodiplontic life cycle: Marchantia, Fern.<\/p>\n
<\/p>\n
Question 6.
\nMatch the following: (column I with column II):<\/p>\n
Column I<\/strong><\/td>\nColumn II<\/strong><\/td>\n<\/tr>\n | (a) Chlamydomonas<\/td>\n | (i) Moss<\/td>\n<\/tr>\n | (b) Cycas<\/td>\n | (ii) Pteridophyte<\/td>\n<\/tr>\n | (c) Selaginella<\/td>\n | (ii) Algae<\/td>\n<\/tr>\n | (d) Sphagnum<\/td>\n | (iv) Gymnosperm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n | Answer: Question 7. Question 8. Question 9.
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